Newton's Laws Review

Front

Can an object still be moving if all forces are balanced?

Back

Yes, if velocity is constant.

Front

What coefficient of friction is used for a moving car?

Back

Coefficient of kinetic friction.

Front

Do you need to push or pull harder on heavier objects to accelerate them?

Back

True.

Front

What is the combination of all the forces acting on an object called?

Back

Net force.

Front

Why must the forces on a squirrel sitting on the ground be balanced?

Back

The squirrel is not accelerating.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What does Newton's Second Law of Motion state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the principle of action and reaction in Newton's Third Law?

Back

For every action, there is an equal and opposite reaction.

Front

What is static friction?

Back

The frictional force that prevents two surfaces from sliding past each other when at rest.

Front

What is kinetic friction?

Back

The frictional force that opposes the motion of two surfaces sliding past each other.